Specialized Tarmac Size Chart
Tarmac SL8 runs 44 to 61 cm, the widest road ladder Specialized publishes. The height column below is Specialized's own road sizing chart, and the geometry column is the frameset table on the same page.
- Frame sizes
- 44–61 cm · 7 sizes
- Rider height
- 4'8"–6'5"
- Height (cm)
- 142–196 cm
- Stack / reach · 54
- 544 / 384 mm
Tarmac SL8 size finder
Which Tarmac SL8 size covers your height?
Height gives you one size, or two when the published height ranges overlap. Stack, reach, and standover settle the overlap.
Enter your height and the Tarmac SL8 size that covers it is marked in the tables below.
How to measureHeight gives the starting size. Standover and reach confirm it.
Height ranges
Where each size starts and ends
Height ranges for every Tarmac SL8 size, 138 to 200 cm overall. 44: 142 to 155 cm. 49: 155 to 163 cm. 52: 163 to 170 cm. 54: 170 to 175 cm. 56: 175 to 180 cm. 58: 180 to 188 cm. 61: 188 to 196 cm.
- 44142–155 cm
- 49155–163 cm
- 52163–170 cm
- 54170–175 cm
- 56175–180 cm
- 58180–188 cm
- 61188–196 cm
Size chart
Tarmac SL8 size by height
Rider height is the road sizing chart Specialized prints on the Tarmac SL8 frameset page. It publishes no rider inseam for this frame, so the table shows height only.
44
4'8"–5'1"
142–155 cm
Smallest Tarmac frame, with the lowest standover in the table at 723 mm.
49
5'1"–5'4"
155–163 cm
Reach grows 9 mm over 44 while stack grows 13 mm.
52
5'4"–5'7"
163–170 cm
The step to 54 adds 4 mm of reach, the smallest reach step in the ladder.
54
5'7"–5'9"
170–175 cm
Most riders start here. Stack and reach above are for this size.
56
5'9"–5'11"
175–180 cm
Reach jumps 11 mm over 54, the largest reach step in the ladder.
58
5'11"–6'2"
180–188 cm
Stack jumps 26 mm over 56, the largest stack step in the ladder.
61
6'2"–6'5"
188–196 cm
Tallest Tarmac frame. Standover climbs 26 mm over 58, the largest standover step.
Start with height. If two sizes overlap, use cycling inseam to choose.How to measure
Geometry
Tarmac SL8 geometry by size
Stack, reach, and standover for every Tarmac SL8 size, read from Specialized's frameset geometry table.
44
4'8"–5'1"
- Stack
- 501 mm
- Reach
- 366 mm
- Standover
- 723 mm
49
5'1"–5'4"
- Stack
- 514 mm
- Reach
- 375 mm
- Standover
- 735 mm
52
5'4"–5'7"
- Stack
- 527 mm
- Reach
- 380 mm
- Standover
- 746 mm
54
5'7"–5'9"
- Stack
- 544 mm
- Reach
- 384 mm
- Standover
- 768 mm
56
5'9"–5'11"
- Stack
- 565 mm
- Reach
- 395 mm
- Standover
- 786 mm
58
5'11"–6'2"
- Stack
- 591 mm
- Reach
- 402 mm
- Standover
- 808 mm
61
6'2"–6'5"
- Stack
- 612 mm
- Reach
- 408 mm
- Standover
- 834 mm
444'8"–5'1"
Stack501 mmReach366 mm495'1"–5'4"
Stack514 mmReach375 mm525'4"–5'7"
Stack527 mmReach380 mm545'7"–5'9"
Stack544 mmReach384 mm565'9"–5'11"
Stack565 mmReach395 mm585'11"–6'2"
Stack591 mmReach402 mm616'2"–6'5"
Stack612 mmReach408 mm
How neighboring sizes compare
If you're 178 cm and fall inside both the 54 and 56 ranges, compare reach and standover rather than assuming the larger size is more comfortable.
How to measure a bike frame- Size stepStackReachStandover
- 44 → 49+13 mm+9 mm+12 mm
- 49 → 52+13 mm+5 mm+11 mm
- 52 → 54+17 mm+4 mm+22 mm
- 54 → 56+21 mm+11 mm+18 mm
- 56 → 58+26 mm+7 mm+22 mm
- 58 → 61+21 mm+6 mm+26 mm
Bike size calculator
Find your Specialized Tarmac SL8 size
Enter your height and inseam for a Specialized road bike, then compare the result with this Tarmac SL8 chart.
Sizing notes
Why height alone is not enough
Riders with the same height can need different sizes because inseam, torso length, flexibility, and preferred handling differ.
3 checks
Stack climbs 111 mm from 44 to 61 while reach grows 42 mm, so the front end rises about two and a half times faster than the frame lengthens.
Standover climbs 111 mm across the ladder. The largest step is 58 to 61 at 26 mm.
Reach moves 42 mm across seven sizes while stack moves 111 mm, so two neighbouring sizes often fit the same rider. Use the height range first, then settle the size on reach.
Sources
Confirm the exact bike after you have a starting size
Every number on this page comes from the sources below. Check the exact model year there before you buy.
Data reviewed:
Compare
Compare before buying
A size label does not mean the same thing across brands. Compare published geometry before you choose.
Related guides
More Specialized and road sizing
Once you have a starting size, compare this frame against the Specialized chart and the road guide.
Specialized bike size chart
Compare Tarmac SL8 against broader Specialized size guidance.
Road bike size chart
Check road sizing by height and inseam before choosing a frame.
Questions
Tarmac SL8 size chart FAQ
Short answers for Specialized Tarmac SL8 sizing.
What size Specialized Tarmac should I ride?
Start with Specialized's height range: 44 for 142–155 cm, 49 for 155–163 cm, 52 for 163–170 cm, 54 for 170–175 cm, 56 for 175–180 cm, 58 for 180–188 cm, and 61 for 188–196 cm. Then confirm standover for the size you land on.
What size Tarmac fits a 172 cm rider?
172 cm sits inside Specialized's 54 range of 170–175 cm. It carries 544 mm of stack, 384 mm of reach, and 768 mm of standover; 52 stops at 170 cm and 56 starts at 175 cm.
Does the Specialized Tarmac come in a 44?
Yes. Tarmac SL8 runs from 44 to 61 cm, and 44 is the smallest road frame Specialized publishes, for riders from 142–155 cm. A rider below 142 cm is outside the published range.
How tall is a Specialized Tarmac 56 for?
Specialized publishes Tarmac 56 for 175–180 cm (5'9"–5'11"). It carries 565 mm of stack, 395 mm of reach, and 786 mm of standover.
Is a 54 Tarmac the same size as a 54 Allez?
No. Every Specialized road model publishes its own geometry table, so a label does not move between frames. Confirm stack, reach, and standover on the model you are buying; the Allez and Allez Sprint pages carry their own numbers.